In the spring of 2015, a group of parents from New Trier feeder schools in Kenilworth, Wilmette, and Winnetka joined together with Superintendent Linda Yonke, CFO/COO Cheryl Witham, the Winnetka and Northfield Campus Principals, Operations Directors, and Facilities Managers, and faculty to create a district-level District 203 Sustainability Committee with the aim of making New Trier more "green."

In 2013, New Trier worked with Smart Energy Design Assistance Center (SEDAC) to complete a Level 3 Energy Assessment & Feasibility Report. Staff used this as a blue print to help formulate the Energy Conservation Reduction Measure plan.